sys/dev/drm/drm_sysctl.c

   1 /*-
   2  * Copyright 2003 Eric Anholt
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * ERIC ANHOLT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  20  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * $FreeBSD$
  24  */
  25
  26 #include "dev/drm/drmP.h"
  27 #include "dev/drm/drm.h"
  28
  29 #include <sys/sysctl.h>
  30
  31 static int         drm_name_info DRM_SYSCTL_HANDLER_ARGS;
  32 static int         drm_vm_info DRM_SYSCTL_HANDLER_ARGS;
  33 static int         drm_clients_info DRM_SYSCTL_HANDLER_ARGS;
  34 static int         drm_bufs_info DRM_SYSCTL_HANDLER_ARGS;
  35
  36 struct drm_sysctl_list {
  37         const char *name;
  38         int        (*f) DRM_SYSCTL_HANDLER_ARGS;
  39 } drm_sysctl_list[] = {
  40         {"name",    drm_name_info},
  41         {"vm",      drm_vm_info},
  42         {"clients", drm_clients_info},
  43         {"bufs",    drm_bufs_info},
  44 };
  45 #define DRM_SYSCTL_ENTRIES (sizeof(drm_sysctl_list)/sizeof(drm_sysctl_list[0]))
  46
  47 struct drm_sysctl_info {
  48         struct sysctl_ctx_list ctx;
  49         char                   name[2];
  50 };
  51
  52 int drm_sysctl_init(drm_device_t *dev)
  53 {
  54         struct drm_sysctl_info *info;
  55         struct sysctl_oid *oid;
  56         struct sysctl_oid *top, *drioid;
  57         int               i;
  58
  59         info = malloc(sizeof *info, M_DRM, M_WAITOK | M_ZERO);
  60         if ( !info )
  61                 return 1;
  62         dev->sysctl = info;
  63
  64         /* Add the sysctl node for DRI if it doesn't already exist */
  65         drioid = SYSCTL_ADD_NODE( &info->ctx, &sysctl__hw_children, OID_AUTO, "dri", CTLFLAG_RW, NULL, "DRI Graphics");
  66         if (!drioid)
  67                 return 1;
  68
  69         /* Find the next free slot under hw.dri */
  70         i = 0;
  71         SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) {
  72                 if (i <= oid->oid_arg2)
  73                         i = oid->oid_arg2 + 1;
  74         }
  75         if (i>9)
  76                 return 1;
  77
  78         /* Add the hw.dri.x for our device */
  79         info->name[0] = '0' + i;
  80         info->name[1] = 0;
  81         top = SYSCTL_ADD_NODE( &info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL);
  82         if (!top)
  83                 return 1;
  84
  85         for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) {
  86                 oid = SYSCTL_ADD_OID(&info->ctx,
  87                         SYSCTL_CHILDREN(top),
  88                         OID_AUTO,
  89                         drm_sysctl_list[i].name,
  90                         CTLTYPE_INT | CTLFLAG_RD,
  91                         dev,
  92                         0,
  93                         drm_sysctl_list[i].f,
  94                         "A",
  95                         NULL);
  96                 if (!oid)
  97                         return 1;
  98         }
  99         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(top), OID_AUTO, "debug",
 100             CTLFLAG_RW, &drm_debug_flag, sizeof(drm_debug_flag),
 101             "Enable debugging output");
 102
 103         return 0;
 104 }
 105
 106 int drm_sysctl_cleanup(drm_device_t *dev)
 107 {
 108         int error;
 109         error = sysctl_ctx_free( &dev->sysctl->ctx );
 110
 111         free(dev->sysctl, M_DRM);
 112         dev->sysctl = NULL;
 113
 114         return error;
 115 }
 116
 117 #define DRM_SYSCTL_PRINT(fmt, arg...)                           \
 118 do {                                                            \
 119         snprintf(buf, sizeof(buf), fmt, ##arg);                 \
 120         retcode = SYSCTL_OUT(req, buf, strlen(buf));            \
 121         if (retcode)                                            \
 122                 goto done;                                      \
 123 } while (0)
 124
 125 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS
 126 {
 127         drm_device_t *dev = arg1;
 128         char buf[128];
 129         int retcode;
 130         int hasunique = 0;
 131
 132         DRM_SYSCTL_PRINT("%s 0x%x", dev->driver_name, dev2udev(dev->devnode));
 133
 134         DRM_LOCK();
 135         if (dev->unique) {
 136                 snprintf(buf, sizeof(buf), " %s", dev->unique);
 137                 hasunique = 1;
 138         }
 139         DRM_UNLOCK();
 140
 141         if (hasunique)
 142                 SYSCTL_OUT(req, buf, strlen(buf));
 143
 144         SYSCTL_OUT(req, "", 1);
 145
 146 done:
 147         return retcode;
 148 }
 149
 150 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
 151 {
 152         drm_device_t *dev = arg1;
 153         drm_local_map_t *map, *tempmaps;
 154         const char   *types[] = { "FB", "REG", "SHM", "AGP", "SG" };
 155         const char *type, *yesno;
 156         int i, mapcount;
 157         char buf[128];
 158         int retcode;
 159
 160         /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
 161          * temporary copy of all the map entries and then SYSCTL_OUT that.
 162          */
 163         DRM_LOCK();
 164
 165         mapcount = 0;
 166         TAILQ_FOREACH(map, &dev->maplist, link)
 167                 mapcount++;
 168
 169         tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, M_DRM, M_NOWAIT);
 170         if (tempmaps == NULL) {
 171                 DRM_UNLOCK();
 172                 return ENOMEM;
 173         }
 174
 175         i = 0;
 176         TAILQ_FOREACH(map, &dev->maplist, link)
 177                 tempmaps[i++] = *map;
 178
 179         DRM_UNLOCK();
 180
 181         DRM_SYSCTL_PRINT("\nslot         offset       size type flags    "
 182                          "address mtrr\n");
 183
 184         for (i = 0; i < mapcount; i++) {
 185                 map = &tempmaps[i];
 186
 187                 if (map->type < 0 || map->type > 4)
 188                         type = "??";
 189                 else
 190                         type = types[map->type];
 191
 192                 if (!map->mtrr)
 193                         yesno = "no";
 194                 else
 195                         yesno = "yes";
 196
 197                 DRM_SYSCTL_PRINT(
 198                     "%4d 0x%08lx 0x%08lx %4.4s  0x%02x 0x%08lx %s\n", i,
 199                     map->offset, map->size, type, map->flags,
 200                     (unsigned long)map->handle, yesno);
 201         }
 202         SYSCTL_OUT(req, "", 1);
 203
 204 done:
 205         free(tempmaps, M_DRM);
 206         return retcode;
 207 }
 208
 209 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
 210 {
 211         drm_device_t     *dev = arg1;
 212         drm_device_dma_t *dma = dev->dma;
 213         drm_device_dma_t tempdma;
 214         int *templists;
 215         int i;
 216         char buf[128];
 217         int retcode;
 218
 219         /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
 220          * copy of the whole structure and the relevant data from buflist.
 221          */
 222         DRM_LOCK();
 223         if (dma == NULL) {
 224                 DRM_UNLOCK();
 225                 return 0;
 226         }
 227         DRM_SPINLOCK(&dev->dma_lock);
 228         tempdma = *dma;
 229         templists = malloc(sizeof(int) * dma->buf_count, M_DRM, M_NOWAIT);
 230         for (i = 0; i < dma->buf_count; i++)
 231                 templists[i] = dma->buflist[i]->list;
 232         dma = &tempdma;
 233         DRM_SPINUNLOCK(&dev->dma_lock);
 234         DRM_UNLOCK();
 235
 236         DRM_SYSCTL_PRINT("\n o     size count  free      segs pages    kB\n");
 237         for (i = 0; i <= DRM_MAX_ORDER; i++) {
 238                 if (dma->bufs[i].buf_count)
 239                         DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
 240                                        i,
 241                                        dma->bufs[i].buf_size,
 242                                        dma->bufs[i].buf_count,
 243                                        atomic_read(&dma->bufs[i]
 244                                                    .freelist.count),
 245                                        dma->bufs[i].seg_count,
 246                                        dma->bufs[i].seg_count
 247                                        *(1 << dma->bufs[i].page_order),
 248                                        (dma->bufs[i].seg_count
 249                                         * (1 << dma->bufs[i].page_order))
 250                                        * PAGE_SIZE / 1024);
 251         }
 252         DRM_SYSCTL_PRINT("\n");
 253         for (i = 0; i < dma->buf_count; i++) {
 254                 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
 255                 DRM_SYSCTL_PRINT(" %d", templists[i]);
 256         }
 257         DRM_SYSCTL_PRINT("\n");
 258
 259         SYSCTL_OUT(req, "", 1);
 260 done:
 261         free(templists, M_DRM);
 262         return retcode;
 263 }
 264
 265 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
 266 {
 267         drm_device_t *dev = arg1;
 268         drm_file_t *priv, *tempprivs;
 269         char buf[128];
 270         int retcode;
 271         int privcount, i;
 272
 273         DRM_LOCK();
 274
 275         privcount = 0;
 276         TAILQ_FOREACH(priv, &dev->files, link)
 277                 privcount++;
 278
 279         tempprivs = malloc(sizeof(drm_file_t) * privcount, M_DRM, M_NOWAIT);
 280         if (tempprivs == NULL) {
 281                 DRM_UNLOCK();
 282                 return ENOMEM;
 283         }
 284         i = 0;
 285         TAILQ_FOREACH(priv, &dev->files, link)
 286                 tempprivs[i++] = *priv;
 287
 288         DRM_UNLOCK();
 289
 290         DRM_SYSCTL_PRINT("\na dev       pid    uid      magic     ioctls\n");
 291         for (i = 0; i < privcount; i++) {
 292                 priv = &tempprivs[i];
 293                 DRM_SYSCTL_PRINT("%c %3d %5d %5d %10u %10lu\n",
 294                                priv->authenticated ? 'y' : 'n',
 295                                priv->minor,
 296                                priv->pid,
 297                                priv->uid,
 298                                priv->magic,
 299                                priv->ioctl_count);
 300         }
 301
 302         SYSCTL_OUT(req, "", 1);
 303 done:
 304         free(tempprivs, M_DRM);
 305         return retcode;
 306 }